Add jupyterlab-threejs npm package

Author: jasongrout

jslab/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "jupyterlab-threejs",
+  "version": "0.1.0",
+  "description": "",
+  "main": "lib/index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "jupyterlab-threejs developers",
+  "license": "BSD-3-Clause",
+  "dependencies": {
+    "@jupyterlab/nbwidgets": "^0.17.1",
+    "jupyter-threejs": "^0.3.0-alpha.0"
+  },
+  "jupyterlab": {
+    "extension": true
+  }
+}